<template>
  <div>
    <!-- 面包屑导航栏 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>分类参数</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片 -->
    <el-card class="box-card">
      <el-alert title="注意：只允许为第三级分类设置相关参数" type="warning" show-icon> </el-alert>
      <el-row>
        <el-col class="cate-cascader">
          <span>选择商品分类：</span>
          <el-cascader v-model="selectedKeys" :options="cateList" :props="cascaderProps" @change="handleChange" clearable></el-cascader>
        </el-col>
      </el-row>
      <!-- 动态标签页 -->
      <el-tabs v-model="activeName" @tab-click="handleClick">
        <el-tab-pane label="动态参数" name="many">
          <el-button type="primary" size="mini" :disabled="btnDisabled" @click="addDialogVisible = true">添加参数</el-button>
          <el-table :data="paramsData" border stripe>
            <el-table-column label="明细" type="expand" width="50px">
              <template slot-scope="scope">
                <el-tag :key="index" v-for="(item, index) in scope.row.attr_vals" closable @close="handleClose(scope.row,index)">
                  {{ item }}
                </el-tag>
                <el-input class="input-new-tag" v-if="scope.row.inputVisible" v-model="scope.row.inputValue" ref="saveTagInput" size="small" @keyup.enter.native="handleInputConfirm(scope.row)" @blur="handleInputConfirm(scope.row)">
                </el-input>
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
            </el-table-column>
            <el-table-column label="序号" type="index" width="50px"></el-table-column>
            <el-table-column label="属性名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.attr_id)"></el-button>
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParamsById(scope.row.attr_id)"></el-button>
              </template>
            </el-table-column>
            <el-table-column label="序号" type="index" width="50px"></el-table-column>
            <el-table-column label="参数名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.attr_id)"></el-button>
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParamsById(scope.row.attr_id)"></el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <el-tab-pane label="静态参数" name="only">
          <el-button type="primary" size="mini" :disabled="btnDisabled" @click="addDialogVisible = true">添加属性</el-button>
          <el-table :data="paramsData" border stripe>
            <!-- 展开列 -->
            <el-table-column label="明细" type="expand" width="50px">
              <template slot-scope="scope">
                <el-tag :key="index" v-for="(item, index) in scope.row.attr_vals" closable @close="handleClose(scope.row,index)">
                  {{ item }}
                </el-tag>
                <el-input class="input-new-tag" v-if="scope.row.inputVisible" v-model="scope.row.inputValue" ref="saveTagInput" size="small" @keyup.enter.native="handleInputConfirm(scope.row)" @blur="handleInputConfirm(scope.row)">
                </el-input>
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
            </el-table-column>
            <el-table-column label="序号" type="index" width="50px"></el-table-column>
            <el-table-column label="属性名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.attr_id)"></el-button>
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParamsById(scope.row.attr_id)"></el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
      <!-- 添加参数对话框 -->
      <el-dialog :title="'添加' + title" :visible.sync="addDialogVisible" width="30%" @close="addDialogClosed">
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="80px">
          <el-form-item :label="title" prop="attr_name">
            <el-input v-model="addForm.attr_name"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addParams">确 定</el-button>
        </span>
      </el-dialog>
      <!-- 修改参数对话框 -->
      <el-dialog title="修改参数" :visible.sync="editDialogVisible" width="30%" @close="editDialogClosed">
        <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="80px">
          <el-form-item label="参数名称" prop="attr_name">
            <el-input v-model="editForm.attr_name"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editParams">确 定</el-button>
        </span>
      </el-dialog>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      cateList: [],
      selectedKeys: [],
      cascaderProps: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children',
        expandTrigger: 'hover',
      },

      // 表格数据展示
      activeName: 'many',
      paramsData: [],

      // 添加参数
      addDialogVisible: false,
      addForm: {},
      addFormRules: {
        attr_name: [{ required: true, message: '请输入参数名称', trigger: 'blur' }],
      },
      // 编辑参数
      editDialogVisible: false,
      editForm: {},
      editFormRules: {
        name: [{ required: true, message: '请输入活动名称', trigger: 'blur' }],
      },
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品分类失败！')
      }
      this.cateList = res.data
    },
    async getParamsData() {
      if (this.selectedKeys.length !== 3) {
        this.selectedKeys = []
        this.paramsData = []
        return
      }
      const { data: res } = await this.$http.get('categories/' + this.cateId + '/attributes', {
        params: { sel: this.activeName },
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取参数列表失败！')
      }
      res.data.forEach((item) => {
        item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : []
        // 实现每个参数明细输入框的独立
        item.inputVisible = false
        item.inputValue = ''
      })
      this.paramsData = res.data
      console.log(this.paramsData)
    },
    handleChange() {
      this.getParamsData()
    },
    handleClick() {
      this.getParamsData()
    },
    // 添加参数
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    addParams() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) {
          return
        }
        const { data: res } = await this.$http.post('categories/' + this.cateId + '/attributes', {
          attr_name: this.addForm.attr_name,
          attr_sel: this.activeName,
        })
        if (res.meta.status !== 201) {
          this.$message.error('添加参数失败')
        }
        this.addDialogVisible = false
        this.getParamsData()
        this.$message.success('添加参数成功')
      })
    },
    // 删除参数
    removeParamsById(id) {
      this.$confirm('确定删除该参数吗？', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning',
      })
        .then(async () => {
          const { data: res } = await this.$http.delete('categories/' + this.cateId + '/attributes/' + id)
          if (res.meta.status !== 200) {
            return this.$message.error('删除参数失败！')
          }
          this.getParamsData()
          this.$message.success('删除参数成功！')
        })
        .catch(() => {
          this.$message.info('已取消删除')
        })
    },
    // 编辑参数
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('categories/' + this.cateId + '/attributes/' + id, this.activeName)
      if (res.meta.status !== 200) {
        this.$message.error('删除参数信息失败！')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    editParams() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) {
          return
        }
        const { data: res } = await this.$http.put('categories/' + this.cateId + '/attributes/' + this.editForm.attr_id, {
          attr_name: this.editForm.attr_name,
          attr_sel: this.editForm.attr_sel,
          attr_vals: this.editForm.attr_vals,
        })
        if (res.meta.status !== 200) {
          this.$message.error('修改参数失败')
        }
        this.editDialogVisible = false
        this.getParamsData()
        this.$message.success('修改参数成功')
      })
    },

    // 明细
    showInput(row) {
      row.inputVisible = true
      this.$nextTick(() => {
        this.$refs.saveTagInput.$refs.input.focus()
      })
    },
    handleInputConfirm(row){
      if(row.inputValue.trim()){
        row.attr_vals.push(row.inputValue.trim())
        this.updateParamsDetails(row)
        row.inputVisible = false
        row.inputValue = ''
      }
    },
    async updateParamsDetails(row){
      const {data:res} = await this.$http.put('categories/'+this.cateId+'/attributes/'+row.attr_id,{
        attr_name : row.attr_name,
        attr_sel : row.attr_sel,
        attr_vals : row.attr_vals.join(' ')
      })
      if(res.meta.status !== 200){
        return this.$message.error('更新参数明细失败')
      }
      this.$message.success('更新参数明细成功')
    },
    handleClose(row, index){
      row.attr_vals.splice(index,1)
      this.updateParamsDetails(row)
    }
  },

  computed: {
    cateId() {
      return this.selectedKeys.length === 3 ? this.selectedKeys[2] : null
    },
    btnDisabled() {
      return this.selectedKeys.length === 3 ? false : true
    },
    title() {
      return this.activeName === 'many' ? '动态参数' : '静态属性'
    },
  },
}
</script>

<style lang="less" scoped>
.cate-cascader {
  margin-top: 15px;
  margin-bottom: 15px;
}
.el-tag {
  margin: 6px;
}
.button-new-tag {
  margin-left: 6px;
}
.input-new-tag {
  width: 120px;
  margin-left: 6px;
}
</style>
